162 ALLIACEAE 



2. DIPTEROSTEMON Rydb. 



Perennials, with fibrous-coated bulbs, few basal narrow leaves, and naked 

 scapes. Flowers in subcapitate umbels, with 3-5 membranous colored bracts. 

 Perianth fiuinelform or camjjanulate, purple; segments united half their length. 

 Stamens 6; filaments subulate, adnate to the ]K'rianth-tube, those oi)j)osite the 

 sepals naked, those opj^osite the petals with two lanceolate lobes or wings at 

 the base; anthers basifixed. Capsule ovoid, 3-celled; cells many-seeded. 



Perianth-tube funnelform, gradually widening into the limb; bracts broad, conspicuously 

 exceeding the pedicels. 1. D. capitatus. 



Perianth-tube cylindro-campanulate, abruptly widening into the limb: bracts narrow, 

 often exceeded by some of the unequal pedicels. 2. D. pauciflorus. 



1. D. capitatus (Benth.) Rydb. Scape 2-5 dm. high; leaves 2-4 dm. long, 

 6-12 mm. wide; bracts ovate, lanceolate or elliptic, acute or obtuse, dark violet- 

 purple; perianth purple, about 15 mm. long. Brodiaea capitata Benth. Hill- 

 sides: Ore. — -Utah — -Calif. Son. Ai>-Je. 



2. D. pauciflorus (Torr.) Rydb. Scape 1-3 dm. high; leaves 1-3 dm. long, 

 2-5 mm. wide; bracts lanceolate, 7-10 mm. long, mostly white, tinged with lilac 

 and purple-veined; perianth about 12 mm. long, purple. B. capitata pauciflora 

 Torr. Arid regions: N.M. — s Utah — s Calif. L. Son. Ap-Je. 



3. HESPEROSCORDUM Lindl. 



Plants with fibrous-coated bulb, few basal narrow leaves, and naked scapes. 

 Flowers in bracted umbels; bracts 3-5. Perianth openly turbinate; segments 

 united one-third their length, white or lilac; lobes ascending. Stamens 6, adnate 

 to the tube of the perianth; free portion of the filaments above the throat del- 

 toid; anthers versatile, oblong. Capsule ovoid, stipitate, triangular in cross- 

 section. 



1. H. lacteum Lindb. Bulb globose, 15-18 mm. thick; scape 3-5 dm. 

 high; leaves 2-3 dm. long, 3-5 mm. wide; bracts narrowly lanceolate, less than 

 1 cm. long; flowers many; perianth white, with greenish or purplish veins, 12-15 

 mm. long; segments oblong or elliptic, obtuse. Brodiaea lactea S. Wats. Moist 

 rich soil: B.C. — Ida. — Nev.^Calif. Submont. My-Je. 



4. TRITELEIA Dougl. Wild Hyacinth. 



Plants with fibrous-coated bulbs, few basal elongated leaves, and naked 

 scapes. Flowers in bracted umbels; bracts 3-5. Perianth from campanulate 

 to narrowly funnelform, in ours blue or purple; segments united half their length 

 or more; lobes ascending. Stamens 6; filaments adnate to the perianth-tube and 

 the inner ones even to its lobes, making them apparently inserted in two distinct 

 series; anthers distinctly versatile; capsule elongated-ovoid or ellipsoid, more or 

 less distinctly stipitate, 3-valved, many-seeded. 



1. T, ^andiflora Lindl. Bulb globose, deep-seated, about 2 cm. thick; 

 scape 3-6 dm. high; flowers rather many; perianth about 2 cm. long, campanulate; 

 lobes elliptic or oval, obtuse. Brodiaea Douglasii S. Wats. Rich soil: B.C. — 

 Mont.^Wyo.— Utah— Ore. Submont. Ap-Jl. 



5. ANDROSTEPHIUM Torr. 



Scapose herbs, with membranous-coated bulbs. Leaves basal, with elongated 

 narrow blades. Bracts several. Flowers perfect, short-pedicelled. Petals and 

 sepals blue, or rose-colored, united to about the middle into a funnelform tube. 

 Stamens 6, adnate to the perianth-tube; filaments united at least to the middle 

 into a tube, which bears tooth-like lobes between the free portion of the filaments; 

 anthers introrse. Ovary 3-celled; style filiform. Seeds several in each locule. 

 Capsule 3-angled. Seeds few, black. 



1. A. breviflorum S. Wats. Bulb ovoid, fibrous-coated, 1.5-2 cm. broad; 

 scape 1-3 dm. high; bracts lanceolate, scarious; flowers rather few; pedicels 

 1-2 cm. long; perianth 15-20 mm. long; lobes oblong; lobes of the crown shorter 

 than the anthers; pod 15-18 mm. in diameter. Brodiaea Paysonii A. Nels. 

 Dry regions: w Colo. — 'S Utah — s Calif. Son. Ap. 



